It's not a hugely difficult job if you're a reasonably competent home
mechanic - usual problems of restricted space etc. However, the Xantia, IMX,
usually snaps its clutch cable because the clutch is worn out - check it
before replacing or you might just be putting another one in a week or so..

(Xantia SX 1.9TD 110K miles, shortly to be changed for C5 SX 2.0HDI)